The epigeic spider fauna of single-row hedges in a Danish agricultural landscape
European Arachnology 2000
To characterise arthropod biodiversity: supported by one type of non-cultivated habitat patches in a cultivated Danish landscape, ground-active arthropods were collected by pitfall traps in three single-row hedgerow types near Bjerringbro, central Jutland, Denmark. Three each of hawthorn (Crategus monogyna), rowan (Sorbus intermedia), or white spruce (Picea glauca) hedgerows were sampled twice yearly, in early (June) and late summer (late August) using 20 pitfall traps per habitat patch (10 in centre, 10 at edge). A total of 71 spider species were identified among 1422 individuals: 33 species (5 15 individuals) were found in hawthorn hedges, 52 species (653 individuals) in rowan, and 48 species (254 individuals) in spruce. Principal Component Analysis clearly separated the spider assemblages by tree species of the hedge. There was no difference between edge and. central traps neither at the assemblage. nor at the species level. Most species captured were characteristic of non-cultivated land (Diplostyla concolor, Diplocepholus latifrons, Oxyptila praticola, Zelotes pusillus), or associated with more permanent grassland rather than cultivated crops (Pardoso prativaga, Pachygnatha degeeri). Species typical of cultivated agricultural fields were infrequent (Erigone-otra, Bathyphantes gracilis, Meioneto rurestris, Oedothorox apicatus) or missing altogether (eg. Araeoncus humilis). Thus, the narrow single-row hedges were faunistically very little influenced by the cultivated matrix habitat enclosing them.
Author(s): Toft, S; Lovei, GL
Journal: European Arachnology 2000